Like most racing series around the world, NASCAR used mandated homologation ... Looking to stage a recovery, Buick decided to replace the Regal with its LeSabre model for 1986.

with said team debuting the Grand National — named in honor of the NASCAR Winston Cup Series — in 1982. Buick's Grand National would eventually spin off from the Regal, evolving over the ...

The Buick Regal enjoyed a fairly long history as one of the brand’s core models. First introduced in 1973, the Regal was positioned as an upscale version of Buick’s mid-size Century.